Patents by Inventor Kazuhito Hayakawa
Kazuhito Hayakawa has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20140320703Abstract: A zoom lens includes, in order from the object side to the image side, a first lens unit having a negative refractive power, a second lens unit having a positive refractive power, and a third lens unit including a lens. The distance between the first lens unit and the second lens unit is smaller at the telephoto end than at the wide angle end, and the distance between the second lens unit and the third lens unit changes during zooming from the wide angle end to the telephoto end. The first lens unit consists, in order from the object side, of a front sub lens unit having a negative refractive power, an optical path bending member, and a rear sub lens unit having a positive refractive power. The front sub lens unit includes a biconcave single lens, and the rear sub lens unit includes one or two single lenses.Type: ApplicationFiled: July 3, 2014Publication date: October 30, 2014Inventors: Masato Katayose, Kenji Ono, Kazuhito Hayakawa
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Patent number: 8810917Abstract: A zoom lens includes, in order from the object side to the image side, a first lens unit having a negative refractive power, a second lens unit having a positive refractive power, and a third lens unit including a lens. The distance between the first lens unit and the second lens unit is smaller at the telephoto end than at the wide angle end, and the distance between the second lens unit and the third lens unit changes during zooming from the wide angle end to the telephoto end. The first lens unit consists, in order from the object side, of a front sub lens unit having a negative refractive power, an optical path bending member, and a rear sub lens unit having a positive refractive power. The front sub lens unit includes a biconcave single lens, and the rear sub lens unit includes one or two single lenses.Type: GrantFiled: October 11, 2013Date of Patent: August 19, 2014Assignee: Olympus Imaging Corp.Inventors: Masato Katayose, Kenji Ono, Kazuhito Hayakawa
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Publication number: 20140043521Abstract: A zoom lens includes, in order from the object side to the image side, a first lens unit having a negative refractive power, a second lens unit having a positive refractive power, and a third lens unit including a lens. The distance between the first lens unit and the second lens unit is smaller at the telephoto end than at the wide angle end, and the distance between the second lens unit and the third lens unit changes during zooming from the wide angle end to the telephoto end. The first lens unit consists, in order from the object side, of a front sub lens unit having a negative refractive power, an optical path bending member, and a rear sub lens unit having a positive refractive power. The front sub lens unit includes a biconcave single lens, and the rear sub lens unit includes one or two single lenses.Type: ApplicationFiled: October 11, 2013Publication date: February 13, 2014Applicant: OLYMPUS IMAGING CORP.Inventors: Masato Katayose, Kenji Ono, Kazuhito Hayakawa
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Patent number: 8587876Abstract: A zoom lens includes, in order from the object side to the image side, a first lens unit having a negative refractive power, a second lens unit having a positive refractive power, and a third lens unit including a lens. The distance between the first lens unit and the second lens unit is smaller at the telephoto end than at the wide angle end, and the distance between the second lens unit and the third lens unit changes during zooming from the wide angle end to the telephoto end. The first lens unit consists, in order from the object side, of a front sub lens unit having a negative refractive power, an optical path bending member, and a rear sub lens unit having a positive refractive power. The front sub lens unit includes a biconcave single lens, and the rear sub lens unit includes one or two single lenses.Type: GrantFiled: November 17, 2011Date of Patent: November 19, 2013Assignee: Olympus Imaging Corp.Inventors: Masato Katayose, Kenji Ono, Kazuhito Hayakawa
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Patent number: 8542301Abstract: An electronic image pickup apparatus includes a plurality of lens units, an image forming optical system, and an image pickup element. The image forming optical system includes at least a lens unit nearest to object side which is disposed nearest to an object side, an aperture stop which is disposed on an image side than the lens unit nearest to object side, and an image-side lens unit which is disposed on the image side than the aperture stop. The lens unit nearest to object side includes a lens having a mark formed on an effective area of a lens surface thereof. At least any one of the lens in the image forming optical system is held such that, a shifting or a tilting of the lens can be adjusted.Type: GrantFiled: July 28, 2011Date of Patent: September 24, 2013Assignee: Olympus Imaging Corp.Inventors: Kenji Ono, Kazuhito Hayakawa, Masato Katayose
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Patent number: 8526116Abstract: A zoom lens with a bent optical path comprising, in order from the object side to the image side, a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, and a rear lens unit group having a positive refractive power as a whole. The first lens unit includes a reflecting member. The rear lens unit group includes three lens unit including, in order from the object side to the image side, a third lens unit having a positive refractive power, a fourth lens unit having a negative refractive power, and a fifth lens unit having a positive refractive power. The distances between the lens units change during zooming from the wide angle end to the telephoto end. The zoom lens satisfies the predetermined conditional expressions.Type: GrantFiled: May 18, 2012Date of Patent: September 3, 2013Assignee: Olympus Imaging Corp.Inventors: Masato Katayose, Kenji Ono, Kazuhito Hayakawa
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Patent number: 8432464Abstract: A zoom lens includes, in order from the object side to the image side, a first lens unit having a positive refracting power and including a reflecting member having a reflecting surface, a second lens unit having a negative refracting power, a rear lens unit group having a positive refracting power as a whole and including at least three lens units, which includes in order from the object side, a third lens unit, a fourth lens unit, and a fifth lens unit. An aperture stop is provided between the second lens unit and the fourth lens unit. During zooming from the wide angle end to the telephoto end, the first lens unit is kept stationary, the second lens unit is located closer to the image side at the telephoto end than at the wide angle end, and the distances between the lens units change. The first lens unit includes, in order from the object side, a negative lens component, the reflecting member, and a rear sub-lens unit including a first positive lens element and a second positive lens element.Type: GrantFiled: August 4, 2011Date of Patent: April 30, 2013Assignee: Olympus Imaging Corp.Inventors: Masato Katayose, Kenji Ono, Hideyuki Nagaoka, Kazuhito Hayakawa
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Publication number: 20120293872Abstract: A zoom lens with a bent optical path comprising, in order from the object side to the image side, a first lens unit having a positive refractive power, a second lens unit having a negative refractive power, and a rear lens unit group having a positive refractive power as a whole. The first lens unit includes a reflecting member. The rear lens unit group includes three lens unit including, in order from the object side to the image side, a third lens unit having a positive refractive power, a fourth lens unit having a negative refractive power, and a fifth lens unit having a positive refractive power. The distances between the lens units change during zooming from the wide angle end to the telephoto end. The zoom lens satisfies the predetermined conditional expressions.Type: ApplicationFiled: May 18, 2012Publication date: November 22, 2012Inventors: Masato Katayose, Kenji Ono, Kazuhito Hayakawa
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Publication number: 20120120501Abstract: A zoom lens includes, in order from the object side to the image side, a first lens unit having a negative refractive power, a second lens unit having a positive refractive power, and a third lens unit including a lens. The distance between the first lens unit and the second lens unit is smaller at the telephoto end than at the wide angle end, and the distance between the second lens unit and the third lens unit changes during zooming from the wide angle end to the telephoto end. The first lens unit consists, in order from the object side, of a front sub lens unit having a negative refractive power, an optical path bending member, and a rear sub lens unit having a positive refractive power. The front sub lens unit includes a biconcave single lens, and the rear sub lens unit includes one or two single lenses.Type: ApplicationFiled: November 17, 2011Publication date: May 17, 2012Inventors: Masato Katayose, Kenji Ono, Kazuhito Hayakawa
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Publication number: 20120038795Abstract: A zoom lens includes, in order from the object side to the image side, a first lens unit having a positive refracting power and including a reflecting member having a reflecting surface, a second lens unit having a negative refracting power, a rear lens unit group having a positive refracting power as a whole and including at least three lens units, which includes in order from the object side, a third lens unit, a fourth lens unit, and a fifth lens unit. An aperture stop is provided between the second lens unit and the fourth lens unit. During zooming from the wide angle end to the telephoto end, the first lens unit is kept stationary, the second lens unit is located closer to the image side at the telephoto end than at the wide angle end, and the distances between the lens units change. The first lens unit includes, in order from the object side, a negative lens component, the reflecting member, and a rear sub-lens unit including a first positive lens element and a second positive lens element.Type: ApplicationFiled: August 4, 2011Publication date: February 16, 2012Inventors: Masato Katayose, Kenji Ono, Hideyuki Nagaoka, Kazuhito Hayakawa
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Publication number: 20120033107Abstract: An electronic image pickup apparatus includes a plurality of lens units, an image forming optical system, and an image pickup element. The image forming optical system includes at least a lens unit nearest to object side which is disposed nearest to an object side, an aperture stop which is disposed on an image side than the lens unit nearest to object side, and an image-side lens unit which is disposed on the image side than the aperture stop. The lens unit nearest to object side includes a lens having a mark formed on an effective area of a lens surface thereof. At least any one of the lens in the image forming optical system is held such that, a shifting or a tilting of the lens can be adjusted.Type: ApplicationFiled: July 28, 2011Publication date: February 9, 2012Inventors: Kenji Ono, Kazuhito Hayakawa, Masato Katayose
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Patent number: 7782386Abstract: An optical apparatus includes a variable optical-property element, a driving circuit driving the variable optical-property element, and an image sensor. In order to compensate a change of an imaging state caused by at least one factor of temperature, humidity, a manufacturing error, a change of an object distance, and a zoom state, photographing is performed while referring to a look-up table to change driving information provided to the variable optical-property element, and the driving information that the high-frequency component of a photographed image is practically maximized is assumed so that the variable optical-property element is driven by the driving information to perform photographing.Type: GrantFiled: March 24, 2003Date of Patent: August 24, 2010Assignee: Olympus CorporationInventors: Kimihiko Nishioka, Kazuhito Hayakawa, Kazuya Nishimura, Hisashi Goto
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Publication number: 20100056869Abstract: An endoscope, at least a part of which is introduced into an object to be observed to image an internal subjects includes; an illuminating device which illuminates the front side and is disposed so that a normal line M is perpendicular to an introduction direction (X direction); and an imaging unit which images the front side and is disposed parallel to the illuminating device. The illuminating device includes an organic light emitting layer which is interposed between two electrodes, a light shielding portion which blocks first light proceeding in a direction of the normal line among the light generated from the organic light emitting layer, and a light extracting portion which is provided at the tip end of the organic light emitting layer and extracts second light proceeding in an in-plane direction of the organic light emitting layer from the tip end among the generated light to emit the second light to the front side.Type: ApplicationFiled: August 25, 2009Publication date: March 4, 2010Applicant: OLYMPUS CORPORATIONInventors: Kazuhito HAYAKAWA, Yoshimasa KUSAZAKI
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Patent number: 7478017Abstract: The design method of the optical system according to the present invention comprises a step (S1) for setting an optical parameter in a design state in which a production error has not been taken into consideration, a step (S2) for making/renewing a production state where an optical parameter in a production state is made by adding the production error to the optical parameter in the design state, or the production error of the optical parameter in an existing production state is renewed, a step (S3) for making an evaluation function which makes the evaluation function and a step (S4) for performing optimization which determines an optimal optical parameter by optimizing the evaluation function.Type: GrantFiled: April 15, 2004Date of Patent: January 13, 2009Assignee: Olympus CorporationInventors: Kazuhito Hayakawa, Katsumi Motohashi, Shigeru Kato
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Publication number: 20060200323Abstract: The design method of the optical system according to the present invention comprises a step (S1) for setting an optical parameter in a design state in which a production error has not been taken into consideration, a step (S2) for making/renewing a production state where an optical parameter in a production state is made by adding the production error to the optical parameter in the design state, or the production error of the optical parameter in an existing production state is renewed, a step (S3) for making an evaluation function which makes the evaluation function and a step (S4) for performing optimization which determines an optimal optical parameter by optimizing the evaluation function.Type: ApplicationFiled: April 15, 2004Publication date: September 7, 2006Applicant: OLYMPUS CORPORATIONInventors: Kazuhito Hayakawa, Katsumi Motohashi, Shigeru Kato
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Publication number: 20060187563Abstract: An object of the present invention is to provide a variable mirror that is readily formable and can be readily and precisely changed into various configurations as desired. A variable mirror 20 according to this invention is a variable mirror having a mirror body 26 formed of an elastic or flexible material and having one surface 26b functioning as a reflecting surface. The mirror body 26 is capable of changing the reflecting surface configuration. The variable mirror is characterized in that the rigidity of the mirror body 26 varies in a direction parallel to the one surface.Type: ApplicationFiled: January 24, 2006Publication date: August 24, 2006Applicant: Olympus CorporationInventors: Kimihiko Nishioka, Kenji Murakami, Kazunari Tokuda, Kazuhito Hayakawa
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Patent number: 7054075Abstract: The invention provides an optical apparatus enabling diopter adjustment, etc. to be achieved using, for instance, a reflection type variable-optical property optical element or a variable-optical property mirror but without recourse to any mechanical moving part. The variable-optical property mirror 9 comprises an aluminum-coated thin film 9a and a plurality of electrodes 9b. Via variable resistors 11 and a power source switch 13 a power source 12 is connected between the thin film 9a and the electrodes 9b, so that the resistance values of the variable resistors 11 can be controlled by an operating unit 14. The shape of the thin film 9a as a reflecting surface is controlled by changing the resistance value of each variable resistor 11 in response to a signal from the operating unit 14 in such a manner that the imaging capability of the variable mirror is optimized.Type: GrantFiled: June 20, 2003Date of Patent: May 30, 2006Assignee: Olympus CorporationInventors: Kimihiko Nishioka, Tetsuhide Takeyama, Tetsuo Nagata, Kazuhito Hayakawa, Toshiyuki Nagaoka
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Publication number: 20050190456Abstract: The invention provides an optical apparatus enabling diopter adjustment, etc. to be achieved using, for instance, a reflection type variable-optical property optical element or a variable-optical property mirror but without recourse to any mechanical moving part. The variable-optical property mirror 9 comprises an aluminum-coated thin film 9a and a plurality of electrodes 9b. Via variable resistors 11 and a power source switch 13 a power source 12 is connected between the thin film 9a and the electrodes 9b, so that the resistance values of the variable resistors 11 can be controlled by an operating unit 14. The shape of the thin film 9a as a reflecting surface is controlled by changing the resistance value of each variable resistor 11 in response to a signal from the operating unit 14 in such a manner that the imaging capability of the variable mirror is optimized.Type: ApplicationFiled: December 16, 2004Publication date: September 1, 2005Applicant: Olympus CorporationInventors: Kimihiko Nishioka, Tetsuhide Takeyama, Tetsuo Nagata, Kazuhito Hayakawa, Toshiyuki Nagaoka
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Publication number: 20040070843Abstract: The invention provides an optical apparatus enabling diopter adjustment, etc. to be achieved using, for instance, a reflection type variable-optical property optical element or a variable-optical property mirror but without recourse to any mechanical moving part. The variable-optical property mirror 9 comprises an aluminum-coated thin film 9a and a plurality of electrodes 9b. Via variable resistors 11 and a power source switch 13 a power source 12 is connected between the thin film 9a and the electrodes 9b, so that the resistance values of the variable resistors 11 can be controlled by an operating unit 14. The shape of the thin film 9a as a reflecting surface is controlled by changing the resistance value of each variable resistor 11 in response to a signal from the operating unit 14 in such a manner that the imaging capability of the variable mirror is optimized.Type: ApplicationFiled: June 20, 2003Publication date: April 15, 2004Applicant: Olympus Optical Co., Ltd.Inventors: Kimihiko Nishioka, Tetsuhide Takeyama, Tetsuo Nagata, Kazuhito Hayakawa, Toshiyuki Nagaoka
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Publication number: 20030184669Abstract: An optical apparatus includes a variable optical-property element, a driving circuit driving the variable optical-property element, and an image sensor. In order to compensate a change of an imaging state caused by at least one factor of temperature, humidity, a manufacturing error, a change of an object distance, and a zoom state, photographing is performed while referring to a look-up table to change driving information provided to the variable optical-property element, and the driving information that the high-frequency component of a photographed image is practically maximized is assumed so that the variable optical-property element is driven by the driving information to perform photographing.Type: ApplicationFiled: March 24, 2003Publication date: October 2, 2003Inventors: Kimihiko Nishioka, Kazuhito Hayakawa, Kazuya Nishimura, Hisashi Goto